Bacterial food-poisoning versus coliforms-faecal streptococci and gamma radiation survival/dose.
All the species tested were sensitive to gamma radiation treatment, even at a dose as low as 0.001 Mrad. The spore-former Bacillus cereus (PCJ 213) proved to be more resistant than the rest of the tested species, while the Gram-negative organisms were more susceptible to irradiation treatment. The tolerance among those organisms is depicted by the descending order: Proteus vulgaris, irregular VI, Escherichia coli I, E. coli III, and Salmonella typhi-murium. Yet all the tested faecal streptococci species, with the exception of Streptococcus bovis, may be regarded as holding an intermediate position between the more resistant B. cereus (PCJ 213) and the more sensitive Gram-negative organisms.
D001409:Bacillus cereus / Q000528:radiation effects*; D004307:Dose-Response Relationship, Radiation; D004755:Enterobacteriaceae / Q000528:radiation effects*; D004926:Escherichia coli / Q000528:radiation effects; D005517:Foodborne Diseases / Q000382:microbiology*; D005720:Gamma Rays; D011514:Proteus vulgaris / Q000528:radiation effects; D012486:Salmonella typhimurium / Q000528:radiation effects; D013291:Streptococcus / Q000528:radiation effects*